There may also be purely formal grammatical restrictions on what can go first.
However, there are no formal restrictions on who can register a net domain name.
Not the kind of thing you could buy from an electronics retailer, but there were no formal restrictions on purchase or ownership.
In contrast, networks of practice consist of volunteers without formal restrictions placed on membership.
"We don't want to have formal restrictions on development, testing and deployment," a senior administration official said today.
There are no formal restrictions on the type of links used.
Exchange controls were lifted and formal restrictions on credit abandoned.
For most Japanese there were no longer formal restrictions on mobility, and, especially in the Meiji period, social ranking was relatively fluid.
"They can be pushed around quite a bit, even when there are no formal restrictions on what they can do."
There were no details of the law, but it is widely expected to impose formal restrictions on the rights of Chinese to hold demonstrations.